18700e3e7SMoni Shoua /* 28700e3e7SMoni Shoua * Copyright (c) 2016 Mellanox Technologies Ltd. All rights reserved. 38700e3e7SMoni Shoua * Copyright (c) 2015 System Fabric Works, Inc. All rights reserved. 48700e3e7SMoni Shoua * 58700e3e7SMoni Shoua * This software is available to you under a choice of one of two 68700e3e7SMoni Shoua * licenses. You may choose to be licensed under the terms of the GNU 78700e3e7SMoni Shoua * General Public License (GPL) Version 2, available from the file 88700e3e7SMoni Shoua * COPYING in the main directory of this source tree, or the 98700e3e7SMoni Shoua * OpenIB.org BSD license below: 108700e3e7SMoni Shoua * 118700e3e7SMoni Shoua * Redistribution and use in source and binary forms, with or 128700e3e7SMoni Shoua * without modification, are permitted provided that the following 138700e3e7SMoni Shoua * conditions are met: 148700e3e7SMoni Shoua * 158700e3e7SMoni Shoua * - Redistributions of source code must retain the above 168700e3e7SMoni Shoua * copyright notice, this list of conditions and the following 178700e3e7SMoni Shoua * disclaimer. 188700e3e7SMoni Shoua * 198700e3e7SMoni Shoua * - Redistributions in binary form must reproduce the above 208700e3e7SMoni Shoua * copyright notice, this list of conditions and the following 218700e3e7SMoni Shoua * disclaimer in the documentation and/or other materials 228700e3e7SMoni Shoua * provided with the distribution. 238700e3e7SMoni Shoua * 248700e3e7SMoni Shoua * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 258700e3e7SMoni Shoua * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 268700e3e7SMoni Shoua * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 278700e3e7SMoni Shoua * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 288700e3e7SMoni Shoua * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 298700e3e7SMoni Shoua * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 308700e3e7SMoni Shoua * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 318700e3e7SMoni Shoua * SOFTWARE. 328700e3e7SMoni Shoua */ 338700e3e7SMoni Shoua 340bbb3b74SBart Van Assche #include <linux/dma-mapping.h> 358700e3e7SMoni Shoua #include "rxe.h" 368700e3e7SMoni Shoua #include "rxe_loc.h" 378700e3e7SMoni Shoua #include "rxe_queue.h" 388700e3e7SMoni Shoua 398700e3e7SMoni Shoua static int rxe_query_device(struct ib_device *dev, 408700e3e7SMoni Shoua struct ib_device_attr *attr, 418700e3e7SMoni Shoua struct ib_udata *uhw) 428700e3e7SMoni Shoua { 438700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 448700e3e7SMoni Shoua 458700e3e7SMoni Shoua if (uhw->inlen || uhw->outlen) 468700e3e7SMoni Shoua return -EINVAL; 478700e3e7SMoni Shoua 488700e3e7SMoni Shoua *attr = rxe->attr; 498700e3e7SMoni Shoua return 0; 508700e3e7SMoni Shoua } 518700e3e7SMoni Shoua 528700e3e7SMoni Shoua static void rxe_eth_speed_to_ib_speed(int speed, u8 *active_speed, 538700e3e7SMoni Shoua u8 *active_width) 548700e3e7SMoni Shoua { 558700e3e7SMoni Shoua if (speed <= 1000) { 568700e3e7SMoni Shoua *active_width = IB_WIDTH_1X; 578700e3e7SMoni Shoua *active_speed = IB_SPEED_SDR; 588700e3e7SMoni Shoua } else if (speed <= 10000) { 598700e3e7SMoni Shoua *active_width = IB_WIDTH_1X; 608700e3e7SMoni Shoua *active_speed = IB_SPEED_FDR10; 618700e3e7SMoni Shoua } else if (speed <= 20000) { 628700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 638700e3e7SMoni Shoua *active_speed = IB_SPEED_DDR; 648700e3e7SMoni Shoua } else if (speed <= 30000) { 658700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 668700e3e7SMoni Shoua *active_speed = IB_SPEED_QDR; 678700e3e7SMoni Shoua } else if (speed <= 40000) { 688700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 698700e3e7SMoni Shoua *active_speed = IB_SPEED_FDR10; 708700e3e7SMoni Shoua } else { 718700e3e7SMoni Shoua *active_width = IB_WIDTH_4X; 728700e3e7SMoni Shoua *active_speed = IB_SPEED_EDR; 738700e3e7SMoni Shoua } 748700e3e7SMoni Shoua } 758700e3e7SMoni Shoua 768700e3e7SMoni Shoua static int rxe_query_port(struct ib_device *dev, 778700e3e7SMoni Shoua u8 port_num, struct ib_port_attr *attr) 788700e3e7SMoni Shoua { 798700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 808700e3e7SMoni Shoua struct rxe_port *port; 818700e3e7SMoni Shoua u32 speed; 828700e3e7SMoni Shoua 838700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 848700e3e7SMoni Shoua pr_warn("invalid port_number %d\n", port_num); 858700e3e7SMoni Shoua goto err1; 868700e3e7SMoni Shoua } 878700e3e7SMoni Shoua 888700e3e7SMoni Shoua port = &rxe->port; 898700e3e7SMoni Shoua 908700e3e7SMoni Shoua *attr = port->attr; 918700e3e7SMoni Shoua 928700e3e7SMoni Shoua mutex_lock(&rxe->usdev_lock); 938700e3e7SMoni Shoua if (rxe->ndev->ethtool_ops->get_link_ksettings) { 948700e3e7SMoni Shoua struct ethtool_link_ksettings ks; 958700e3e7SMoni Shoua 968700e3e7SMoni Shoua rxe->ndev->ethtool_ops->get_link_ksettings(rxe->ndev, &ks); 978700e3e7SMoni Shoua speed = ks.base.speed; 988700e3e7SMoni Shoua } else if (rxe->ndev->ethtool_ops->get_settings) { 998700e3e7SMoni Shoua struct ethtool_cmd cmd; 1008700e3e7SMoni Shoua 1018700e3e7SMoni Shoua rxe->ndev->ethtool_ops->get_settings(rxe->ndev, &cmd); 1028700e3e7SMoni Shoua speed = cmd.speed; 1038700e3e7SMoni Shoua } else { 104e404f945SParav Pandit pr_warn("%s speed is unknown, defaulting to 1000\n", 105e404f945SParav Pandit rxe->ndev->name); 1068700e3e7SMoni Shoua speed = 1000; 1078700e3e7SMoni Shoua } 108e404f945SParav Pandit rxe_eth_speed_to_ib_speed(speed, &attr->active_speed, 109e404f945SParav Pandit &attr->active_width); 1108700e3e7SMoni Shoua mutex_unlock(&rxe->usdev_lock); 1118700e3e7SMoni Shoua 1128700e3e7SMoni Shoua return 0; 1138700e3e7SMoni Shoua 1148700e3e7SMoni Shoua err1: 1158700e3e7SMoni Shoua return -EINVAL; 1168700e3e7SMoni Shoua } 1178700e3e7SMoni Shoua 1188700e3e7SMoni Shoua static int rxe_query_gid(struct ib_device *device, 1198700e3e7SMoni Shoua u8 port_num, int index, union ib_gid *gid) 1208700e3e7SMoni Shoua { 1218700e3e7SMoni Shoua int ret; 1228700e3e7SMoni Shoua 1238700e3e7SMoni Shoua if (index > RXE_PORT_GID_TBL_LEN) 1248700e3e7SMoni Shoua return -EINVAL; 1258700e3e7SMoni Shoua 1268700e3e7SMoni Shoua ret = ib_get_cached_gid(device, port_num, index, gid, NULL); 1278700e3e7SMoni Shoua if (ret == -EAGAIN) { 1288700e3e7SMoni Shoua memcpy(gid, &zgid, sizeof(*gid)); 1298700e3e7SMoni Shoua return 0; 1308700e3e7SMoni Shoua } 1318700e3e7SMoni Shoua 1328700e3e7SMoni Shoua return ret; 1338700e3e7SMoni Shoua } 1348700e3e7SMoni Shoua 1358700e3e7SMoni Shoua static int rxe_add_gid(struct ib_device *device, u8 port_num, unsigned int 1368700e3e7SMoni Shoua index, const union ib_gid *gid, 1378700e3e7SMoni Shoua const struct ib_gid_attr *attr, void **context) 1388700e3e7SMoni Shoua { 1398700e3e7SMoni Shoua if (index >= RXE_PORT_GID_TBL_LEN) 1408700e3e7SMoni Shoua return -EINVAL; 1418700e3e7SMoni Shoua return 0; 1428700e3e7SMoni Shoua } 1438700e3e7SMoni Shoua 1448700e3e7SMoni Shoua static int rxe_del_gid(struct ib_device *device, u8 port_num, unsigned int 1458700e3e7SMoni Shoua index, void **context) 1468700e3e7SMoni Shoua { 1478700e3e7SMoni Shoua if (index >= RXE_PORT_GID_TBL_LEN) 1488700e3e7SMoni Shoua return -EINVAL; 1498700e3e7SMoni Shoua return 0; 1508700e3e7SMoni Shoua } 1518700e3e7SMoni Shoua 1528700e3e7SMoni Shoua static struct net_device *rxe_get_netdev(struct ib_device *device, 1538700e3e7SMoni Shoua u8 port_num) 1548700e3e7SMoni Shoua { 1558700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(device); 1568700e3e7SMoni Shoua 1578700e3e7SMoni Shoua if (rxe->ndev) { 1588700e3e7SMoni Shoua dev_hold(rxe->ndev); 1598700e3e7SMoni Shoua return rxe->ndev; 1608700e3e7SMoni Shoua } 1618700e3e7SMoni Shoua 1628700e3e7SMoni Shoua return NULL; 1638700e3e7SMoni Shoua } 1648700e3e7SMoni Shoua 1658700e3e7SMoni Shoua static int rxe_query_pkey(struct ib_device *device, 1668700e3e7SMoni Shoua u8 port_num, u16 index, u16 *pkey) 1678700e3e7SMoni Shoua { 1688700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(device); 1698700e3e7SMoni Shoua struct rxe_port *port; 1708700e3e7SMoni Shoua 1718700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 17285e9f1dbSBart Van Assche dev_warn(device->dev.parent, "invalid port_num = %d\n", 1738700e3e7SMoni Shoua port_num); 1748700e3e7SMoni Shoua goto err1; 1758700e3e7SMoni Shoua } 1768700e3e7SMoni Shoua 1778700e3e7SMoni Shoua port = &rxe->port; 1788700e3e7SMoni Shoua 1798700e3e7SMoni Shoua if (unlikely(index >= port->attr.pkey_tbl_len)) { 18085e9f1dbSBart Van Assche dev_warn(device->dev.parent, "invalid index = %d\n", 1818700e3e7SMoni Shoua index); 1828700e3e7SMoni Shoua goto err1; 1838700e3e7SMoni Shoua } 1848700e3e7SMoni Shoua 1858700e3e7SMoni Shoua *pkey = port->pkey_tbl[index]; 1868700e3e7SMoni Shoua return 0; 1878700e3e7SMoni Shoua 1888700e3e7SMoni Shoua err1: 1898700e3e7SMoni Shoua return -EINVAL; 1908700e3e7SMoni Shoua } 1918700e3e7SMoni Shoua 1928700e3e7SMoni Shoua static int rxe_modify_device(struct ib_device *dev, 1938700e3e7SMoni Shoua int mask, struct ib_device_modify *attr) 1948700e3e7SMoni Shoua { 1958700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 1968700e3e7SMoni Shoua 1978700e3e7SMoni Shoua if (mask & IB_DEVICE_MODIFY_SYS_IMAGE_GUID) 1988700e3e7SMoni Shoua rxe->attr.sys_image_guid = cpu_to_be64(attr->sys_image_guid); 1998700e3e7SMoni Shoua 2008700e3e7SMoni Shoua if (mask & IB_DEVICE_MODIFY_NODE_DESC) { 2018700e3e7SMoni Shoua memcpy(rxe->ib_dev.node_desc, 2028700e3e7SMoni Shoua attr->node_desc, sizeof(rxe->ib_dev.node_desc)); 2038700e3e7SMoni Shoua } 2048700e3e7SMoni Shoua 2058700e3e7SMoni Shoua return 0; 2068700e3e7SMoni Shoua } 2078700e3e7SMoni Shoua 2088700e3e7SMoni Shoua static int rxe_modify_port(struct ib_device *dev, 2098700e3e7SMoni Shoua u8 port_num, int mask, struct ib_port_modify *attr) 2108700e3e7SMoni Shoua { 2118700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2128700e3e7SMoni Shoua struct rxe_port *port; 2138700e3e7SMoni Shoua 2148700e3e7SMoni Shoua if (unlikely(port_num != 1)) { 2158700e3e7SMoni Shoua pr_warn("invalid port_num = %d\n", port_num); 2168700e3e7SMoni Shoua goto err1; 2178700e3e7SMoni Shoua } 2188700e3e7SMoni Shoua 2198700e3e7SMoni Shoua port = &rxe->port; 2208700e3e7SMoni Shoua 2218700e3e7SMoni Shoua port->attr.port_cap_flags |= attr->set_port_cap_mask; 2228700e3e7SMoni Shoua port->attr.port_cap_flags &= ~attr->clr_port_cap_mask; 2238700e3e7SMoni Shoua 2248700e3e7SMoni Shoua if (mask & IB_PORT_RESET_QKEY_CNTR) 2258700e3e7SMoni Shoua port->attr.qkey_viol_cntr = 0; 2268700e3e7SMoni Shoua 2278700e3e7SMoni Shoua return 0; 2288700e3e7SMoni Shoua 2298700e3e7SMoni Shoua err1: 2308700e3e7SMoni Shoua return -EINVAL; 2318700e3e7SMoni Shoua } 2328700e3e7SMoni Shoua 2338700e3e7SMoni Shoua static enum rdma_link_layer rxe_get_link_layer(struct ib_device *dev, 2348700e3e7SMoni Shoua u8 port_num) 2358700e3e7SMoni Shoua { 2368700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2378700e3e7SMoni Shoua 238839f5ac0SBart Van Assche return rxe_link_layer(rxe, port_num); 2398700e3e7SMoni Shoua } 2408700e3e7SMoni Shoua 2418700e3e7SMoni Shoua static struct ib_ucontext *rxe_alloc_ucontext(struct ib_device *dev, 2428700e3e7SMoni Shoua struct ib_udata *udata) 2438700e3e7SMoni Shoua { 2448700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2458700e3e7SMoni Shoua struct rxe_ucontext *uc; 2468700e3e7SMoni Shoua 2478700e3e7SMoni Shoua uc = rxe_alloc(&rxe->uc_pool); 2488700e3e7SMoni Shoua return uc ? &uc->ibuc : ERR_PTR(-ENOMEM); 2498700e3e7SMoni Shoua } 2508700e3e7SMoni Shoua 2518700e3e7SMoni Shoua static int rxe_dealloc_ucontext(struct ib_ucontext *ibuc) 2528700e3e7SMoni Shoua { 2538700e3e7SMoni Shoua struct rxe_ucontext *uc = to_ruc(ibuc); 2548700e3e7SMoni Shoua 2558700e3e7SMoni Shoua rxe_drop_ref(uc); 2568700e3e7SMoni Shoua return 0; 2578700e3e7SMoni Shoua } 2588700e3e7SMoni Shoua 2598700e3e7SMoni Shoua static int rxe_port_immutable(struct ib_device *dev, u8 port_num, 2608700e3e7SMoni Shoua struct ib_port_immutable *immutable) 2618700e3e7SMoni Shoua { 2628700e3e7SMoni Shoua int err; 2638700e3e7SMoni Shoua struct ib_port_attr attr; 2648700e3e7SMoni Shoua 2658700e3e7SMoni Shoua err = rxe_query_port(dev, port_num, &attr); 2668700e3e7SMoni Shoua if (err) 2678700e3e7SMoni Shoua return err; 2688700e3e7SMoni Shoua 2698700e3e7SMoni Shoua immutable->pkey_tbl_len = attr.pkey_tbl_len; 2708700e3e7SMoni Shoua immutable->gid_tbl_len = attr.gid_tbl_len; 2718700e3e7SMoni Shoua immutable->core_cap_flags = RDMA_CORE_PORT_IBA_ROCE_UDP_ENCAP; 2728700e3e7SMoni Shoua immutable->max_mad_size = IB_MGMT_MAD_SIZE; 2738700e3e7SMoni Shoua 2748700e3e7SMoni Shoua return 0; 2758700e3e7SMoni Shoua } 2768700e3e7SMoni Shoua 2778700e3e7SMoni Shoua static struct ib_pd *rxe_alloc_pd(struct ib_device *dev, 2788700e3e7SMoni Shoua struct ib_ucontext *context, 2798700e3e7SMoni Shoua struct ib_udata *udata) 2808700e3e7SMoni Shoua { 2818700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 2828700e3e7SMoni Shoua struct rxe_pd *pd; 2838700e3e7SMoni Shoua 2848700e3e7SMoni Shoua pd = rxe_alloc(&rxe->pd_pool); 2858700e3e7SMoni Shoua return pd ? &pd->ibpd : ERR_PTR(-ENOMEM); 2868700e3e7SMoni Shoua } 2878700e3e7SMoni Shoua 2888700e3e7SMoni Shoua static int rxe_dealloc_pd(struct ib_pd *ibpd) 2898700e3e7SMoni Shoua { 2908700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 2918700e3e7SMoni Shoua 2928700e3e7SMoni Shoua rxe_drop_ref(pd); 2938700e3e7SMoni Shoua return 0; 2948700e3e7SMoni Shoua } 2958700e3e7SMoni Shoua 2968700e3e7SMoni Shoua static int rxe_init_av(struct rxe_dev *rxe, struct ib_ah_attr *attr, 2978700e3e7SMoni Shoua struct rxe_av *av) 2988700e3e7SMoni Shoua { 2998700e3e7SMoni Shoua int err; 3008700e3e7SMoni Shoua union ib_gid sgid; 3018700e3e7SMoni Shoua struct ib_gid_attr sgid_attr; 3028700e3e7SMoni Shoua 3038700e3e7SMoni Shoua err = ib_get_cached_gid(&rxe->ib_dev, attr->port_num, 3048700e3e7SMoni Shoua attr->grh.sgid_index, &sgid, 3058700e3e7SMoni Shoua &sgid_attr); 3068700e3e7SMoni Shoua if (err) { 3078700e3e7SMoni Shoua pr_err("Failed to query sgid. err = %d\n", err); 3088700e3e7SMoni Shoua return err; 3098700e3e7SMoni Shoua } 3108700e3e7SMoni Shoua 3118700e3e7SMoni Shoua err = rxe_av_from_attr(rxe, attr->port_num, av, attr); 3128700e3e7SMoni Shoua if (!err) 3138700e3e7SMoni Shoua err = rxe_av_fill_ip_info(rxe, av, attr, &sgid_attr, &sgid); 3148700e3e7SMoni Shoua 3158700e3e7SMoni Shoua if (sgid_attr.ndev) 3168700e3e7SMoni Shoua dev_put(sgid_attr.ndev); 3178700e3e7SMoni Shoua return err; 3188700e3e7SMoni Shoua } 3198700e3e7SMoni Shoua 320477864c8SMoni Shoua static struct ib_ah *rxe_create_ah(struct ib_pd *ibpd, struct ib_ah_attr *attr, 321477864c8SMoni Shoua struct ib_udata *udata) 322477864c8SMoni Shoua 3238700e3e7SMoni Shoua { 3248700e3e7SMoni Shoua int err; 3258700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 3268700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 3278700e3e7SMoni Shoua struct rxe_ah *ah; 3288700e3e7SMoni Shoua 3298700e3e7SMoni Shoua err = rxe_av_chk_attr(rxe, attr); 3308700e3e7SMoni Shoua if (err) 3318700e3e7SMoni Shoua goto err1; 3328700e3e7SMoni Shoua 3338700e3e7SMoni Shoua ah = rxe_alloc(&rxe->ah_pool); 3348700e3e7SMoni Shoua if (!ah) { 3358700e3e7SMoni Shoua err = -ENOMEM; 3368700e3e7SMoni Shoua goto err1; 3378700e3e7SMoni Shoua } 3388700e3e7SMoni Shoua 3398700e3e7SMoni Shoua rxe_add_ref(pd); 3408700e3e7SMoni Shoua ah->pd = pd; 3418700e3e7SMoni Shoua 3428700e3e7SMoni Shoua err = rxe_init_av(rxe, attr, &ah->av); 3438700e3e7SMoni Shoua if (err) 3448700e3e7SMoni Shoua goto err2; 3458700e3e7SMoni Shoua 3468700e3e7SMoni Shoua return &ah->ibah; 3478700e3e7SMoni Shoua 3488700e3e7SMoni Shoua err2: 3498700e3e7SMoni Shoua rxe_drop_ref(pd); 3508700e3e7SMoni Shoua rxe_drop_ref(ah); 3518700e3e7SMoni Shoua err1: 3528700e3e7SMoni Shoua return ERR_PTR(err); 3538700e3e7SMoni Shoua } 3548700e3e7SMoni Shoua 3558700e3e7SMoni Shoua static int rxe_modify_ah(struct ib_ah *ibah, struct ib_ah_attr *attr) 3568700e3e7SMoni Shoua { 3578700e3e7SMoni Shoua int err; 3588700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibah->device); 3598700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3608700e3e7SMoni Shoua 3618700e3e7SMoni Shoua err = rxe_av_chk_attr(rxe, attr); 3628700e3e7SMoni Shoua if (err) 3638700e3e7SMoni Shoua return err; 3648700e3e7SMoni Shoua 3658700e3e7SMoni Shoua err = rxe_init_av(rxe, attr, &ah->av); 3668700e3e7SMoni Shoua if (err) 3678700e3e7SMoni Shoua return err; 3688700e3e7SMoni Shoua 3698700e3e7SMoni Shoua return 0; 3708700e3e7SMoni Shoua } 3718700e3e7SMoni Shoua 3728700e3e7SMoni Shoua static int rxe_query_ah(struct ib_ah *ibah, struct ib_ah_attr *attr) 3738700e3e7SMoni Shoua { 3748700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibah->device); 3758700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3768700e3e7SMoni Shoua 3778700e3e7SMoni Shoua rxe_av_to_attr(rxe, &ah->av, attr); 3788700e3e7SMoni Shoua return 0; 3798700e3e7SMoni Shoua } 3808700e3e7SMoni Shoua 3818700e3e7SMoni Shoua static int rxe_destroy_ah(struct ib_ah *ibah) 3828700e3e7SMoni Shoua { 3838700e3e7SMoni Shoua struct rxe_ah *ah = to_rah(ibah); 3848700e3e7SMoni Shoua 3858700e3e7SMoni Shoua rxe_drop_ref(ah->pd); 3868700e3e7SMoni Shoua rxe_drop_ref(ah); 3878700e3e7SMoni Shoua return 0; 3888700e3e7SMoni Shoua } 3898700e3e7SMoni Shoua 3908700e3e7SMoni Shoua static int post_one_recv(struct rxe_rq *rq, struct ib_recv_wr *ibwr) 3918700e3e7SMoni Shoua { 3928700e3e7SMoni Shoua int err; 3938700e3e7SMoni Shoua int i; 3948700e3e7SMoni Shoua u32 length; 3958700e3e7SMoni Shoua struct rxe_recv_wqe *recv_wqe; 3968700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 3978700e3e7SMoni Shoua 3988700e3e7SMoni Shoua if (unlikely(queue_full(rq->queue))) { 3998700e3e7SMoni Shoua err = -ENOMEM; 4008700e3e7SMoni Shoua goto err1; 4018700e3e7SMoni Shoua } 4028700e3e7SMoni Shoua 4038700e3e7SMoni Shoua if (unlikely(num_sge > rq->max_sge)) { 4048700e3e7SMoni Shoua err = -EINVAL; 4058700e3e7SMoni Shoua goto err1; 4068700e3e7SMoni Shoua } 4078700e3e7SMoni Shoua 4088700e3e7SMoni Shoua length = 0; 4098700e3e7SMoni Shoua for (i = 0; i < num_sge; i++) 4108700e3e7SMoni Shoua length += ibwr->sg_list[i].length; 4118700e3e7SMoni Shoua 4128700e3e7SMoni Shoua recv_wqe = producer_addr(rq->queue); 4138700e3e7SMoni Shoua recv_wqe->wr_id = ibwr->wr_id; 4148700e3e7SMoni Shoua recv_wqe->num_sge = num_sge; 4158700e3e7SMoni Shoua 4168700e3e7SMoni Shoua memcpy(recv_wqe->dma.sge, ibwr->sg_list, 4178700e3e7SMoni Shoua num_sge * sizeof(struct ib_sge)); 4188700e3e7SMoni Shoua 4198700e3e7SMoni Shoua recv_wqe->dma.length = length; 4208700e3e7SMoni Shoua recv_wqe->dma.resid = length; 4218700e3e7SMoni Shoua recv_wqe->dma.num_sge = num_sge; 4228700e3e7SMoni Shoua recv_wqe->dma.cur_sge = 0; 4238700e3e7SMoni Shoua recv_wqe->dma.sge_offset = 0; 4248700e3e7SMoni Shoua 4258700e3e7SMoni Shoua /* make sure all changes to the work queue are written before we 4268700e3e7SMoni Shoua * update the producer pointer 4278700e3e7SMoni Shoua */ 4288700e3e7SMoni Shoua smp_wmb(); 4298700e3e7SMoni Shoua 4308700e3e7SMoni Shoua advance_producer(rq->queue); 4318700e3e7SMoni Shoua return 0; 4328700e3e7SMoni Shoua 4338700e3e7SMoni Shoua err1: 4348700e3e7SMoni Shoua return err; 4358700e3e7SMoni Shoua } 4368700e3e7SMoni Shoua 4378700e3e7SMoni Shoua static struct ib_srq *rxe_create_srq(struct ib_pd *ibpd, 4388700e3e7SMoni Shoua struct ib_srq_init_attr *init, 4398700e3e7SMoni Shoua struct ib_udata *udata) 4408700e3e7SMoni Shoua { 4418700e3e7SMoni Shoua int err; 4428700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 4438700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 4448700e3e7SMoni Shoua struct rxe_srq *srq; 4458700e3e7SMoni Shoua struct ib_ucontext *context = udata ? ibpd->uobject->context : NULL; 4468700e3e7SMoni Shoua 4478700e3e7SMoni Shoua err = rxe_srq_chk_attr(rxe, NULL, &init->attr, IB_SRQ_INIT_MASK); 4488700e3e7SMoni Shoua if (err) 4498700e3e7SMoni Shoua goto err1; 4508700e3e7SMoni Shoua 4518700e3e7SMoni Shoua srq = rxe_alloc(&rxe->srq_pool); 4528700e3e7SMoni Shoua if (!srq) { 4538700e3e7SMoni Shoua err = -ENOMEM; 4548700e3e7SMoni Shoua goto err1; 4558700e3e7SMoni Shoua } 4568700e3e7SMoni Shoua 4578700e3e7SMoni Shoua rxe_add_index(srq); 4588700e3e7SMoni Shoua rxe_add_ref(pd); 4598700e3e7SMoni Shoua srq->pd = pd; 4608700e3e7SMoni Shoua 4618700e3e7SMoni Shoua err = rxe_srq_from_init(rxe, srq, init, context, udata); 4628700e3e7SMoni Shoua if (err) 4638700e3e7SMoni Shoua goto err2; 4648700e3e7SMoni Shoua 4658700e3e7SMoni Shoua return &srq->ibsrq; 4668700e3e7SMoni Shoua 4678700e3e7SMoni Shoua err2: 4688700e3e7SMoni Shoua rxe_drop_ref(pd); 4698700e3e7SMoni Shoua rxe_drop_index(srq); 4708700e3e7SMoni Shoua rxe_drop_ref(srq); 4718700e3e7SMoni Shoua err1: 4728700e3e7SMoni Shoua return ERR_PTR(err); 4738700e3e7SMoni Shoua } 4748700e3e7SMoni Shoua 4758700e3e7SMoni Shoua static int rxe_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr, 4768700e3e7SMoni Shoua enum ib_srq_attr_mask mask, 4778700e3e7SMoni Shoua struct ib_udata *udata) 4788700e3e7SMoni Shoua { 4798700e3e7SMoni Shoua int err; 4808700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 4818700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibsrq->device); 4828700e3e7SMoni Shoua 4838700e3e7SMoni Shoua err = rxe_srq_chk_attr(rxe, srq, attr, mask); 4848700e3e7SMoni Shoua if (err) 4858700e3e7SMoni Shoua goto err1; 4868700e3e7SMoni Shoua 4878700e3e7SMoni Shoua err = rxe_srq_from_attr(rxe, srq, attr, mask, udata); 4888700e3e7SMoni Shoua if (err) 4898700e3e7SMoni Shoua goto err1; 4908700e3e7SMoni Shoua 4918700e3e7SMoni Shoua return 0; 4928700e3e7SMoni Shoua 4938700e3e7SMoni Shoua err1: 4948700e3e7SMoni Shoua return err; 4958700e3e7SMoni Shoua } 4968700e3e7SMoni Shoua 4978700e3e7SMoni Shoua static int rxe_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr) 4988700e3e7SMoni Shoua { 4998700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 5008700e3e7SMoni Shoua 5018700e3e7SMoni Shoua if (srq->error) 5028700e3e7SMoni Shoua return -EINVAL; 5038700e3e7SMoni Shoua 5048700e3e7SMoni Shoua attr->max_wr = srq->rq.queue->buf->index_mask; 5058700e3e7SMoni Shoua attr->max_sge = srq->rq.max_sge; 5068700e3e7SMoni Shoua attr->srq_limit = srq->limit; 5078700e3e7SMoni Shoua return 0; 5088700e3e7SMoni Shoua } 5098700e3e7SMoni Shoua 5108700e3e7SMoni Shoua static int rxe_destroy_srq(struct ib_srq *ibsrq) 5118700e3e7SMoni Shoua { 5128700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 5138700e3e7SMoni Shoua 5148700e3e7SMoni Shoua if (srq->rq.queue) 5158700e3e7SMoni Shoua rxe_queue_cleanup(srq->rq.queue); 5168700e3e7SMoni Shoua 5178700e3e7SMoni Shoua rxe_drop_ref(srq->pd); 5188700e3e7SMoni Shoua rxe_drop_index(srq); 5198700e3e7SMoni Shoua rxe_drop_ref(srq); 5208700e3e7SMoni Shoua 5218700e3e7SMoni Shoua return 0; 5228700e3e7SMoni Shoua } 5238700e3e7SMoni Shoua 5248700e3e7SMoni Shoua static int rxe_post_srq_recv(struct ib_srq *ibsrq, struct ib_recv_wr *wr, 5258700e3e7SMoni Shoua struct ib_recv_wr **bad_wr) 5268700e3e7SMoni Shoua { 5278700e3e7SMoni Shoua int err = 0; 5288700e3e7SMoni Shoua unsigned long flags; 5298700e3e7SMoni Shoua struct rxe_srq *srq = to_rsrq(ibsrq); 5308700e3e7SMoni Shoua 5318700e3e7SMoni Shoua spin_lock_irqsave(&srq->rq.producer_lock, flags); 5328700e3e7SMoni Shoua 5338700e3e7SMoni Shoua while (wr) { 5348700e3e7SMoni Shoua err = post_one_recv(&srq->rq, wr); 5358700e3e7SMoni Shoua if (unlikely(err)) 5368700e3e7SMoni Shoua break; 5378700e3e7SMoni Shoua wr = wr->next; 5388700e3e7SMoni Shoua } 5398700e3e7SMoni Shoua 5408700e3e7SMoni Shoua spin_unlock_irqrestore(&srq->rq.producer_lock, flags); 5418700e3e7SMoni Shoua 5428700e3e7SMoni Shoua if (err) 5438700e3e7SMoni Shoua *bad_wr = wr; 5448700e3e7SMoni Shoua 5458700e3e7SMoni Shoua return err; 5468700e3e7SMoni Shoua } 5478700e3e7SMoni Shoua 5488700e3e7SMoni Shoua static struct ib_qp *rxe_create_qp(struct ib_pd *ibpd, 5498700e3e7SMoni Shoua struct ib_qp_init_attr *init, 5508700e3e7SMoni Shoua struct ib_udata *udata) 5518700e3e7SMoni Shoua { 5528700e3e7SMoni Shoua int err; 5538700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 5548700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 5558700e3e7SMoni Shoua struct rxe_qp *qp; 5568700e3e7SMoni Shoua 5578700e3e7SMoni Shoua err = rxe_qp_chk_init(rxe, init); 5588700e3e7SMoni Shoua if (err) 5598700e3e7SMoni Shoua goto err1; 5608700e3e7SMoni Shoua 5618700e3e7SMoni Shoua qp = rxe_alloc(&rxe->qp_pool); 5628700e3e7SMoni Shoua if (!qp) { 5638700e3e7SMoni Shoua err = -ENOMEM; 5648700e3e7SMoni Shoua goto err1; 5658700e3e7SMoni Shoua } 5668700e3e7SMoni Shoua 5678700e3e7SMoni Shoua if (udata) { 5688700e3e7SMoni Shoua if (udata->inlen) { 5698700e3e7SMoni Shoua err = -EINVAL; 5705b9ea16cSAndrew Boyer goto err2; 5718700e3e7SMoni Shoua } 5728700e3e7SMoni Shoua qp->is_user = 1; 5738700e3e7SMoni Shoua } 5748700e3e7SMoni Shoua 5758700e3e7SMoni Shoua rxe_add_index(qp); 5768700e3e7SMoni Shoua 5778700e3e7SMoni Shoua err = rxe_qp_from_init(rxe, qp, pd, init, udata, ibpd); 5788700e3e7SMoni Shoua if (err) 5795b9ea16cSAndrew Boyer goto err3; 5808700e3e7SMoni Shoua 5818700e3e7SMoni Shoua return &qp->ibqp; 5828700e3e7SMoni Shoua 5835b9ea16cSAndrew Boyer err3: 5848700e3e7SMoni Shoua rxe_drop_index(qp); 5855b9ea16cSAndrew Boyer err2: 5868700e3e7SMoni Shoua rxe_drop_ref(qp); 5878700e3e7SMoni Shoua err1: 5888700e3e7SMoni Shoua return ERR_PTR(err); 5898700e3e7SMoni Shoua } 5908700e3e7SMoni Shoua 5918700e3e7SMoni Shoua static int rxe_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 5928700e3e7SMoni Shoua int mask, struct ib_udata *udata) 5938700e3e7SMoni Shoua { 5948700e3e7SMoni Shoua int err; 5958700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 5968700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 5978700e3e7SMoni Shoua 5988700e3e7SMoni Shoua err = rxe_qp_chk_attr(rxe, qp, attr, mask); 5998700e3e7SMoni Shoua if (err) 6008700e3e7SMoni Shoua goto err1; 6018700e3e7SMoni Shoua 6028700e3e7SMoni Shoua err = rxe_qp_from_attr(qp, attr, mask, udata); 6038700e3e7SMoni Shoua if (err) 6048700e3e7SMoni Shoua goto err1; 6058700e3e7SMoni Shoua 6068700e3e7SMoni Shoua return 0; 6078700e3e7SMoni Shoua 6088700e3e7SMoni Shoua err1: 6098700e3e7SMoni Shoua return err; 6108700e3e7SMoni Shoua } 6118700e3e7SMoni Shoua 6128700e3e7SMoni Shoua static int rxe_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 6138700e3e7SMoni Shoua int mask, struct ib_qp_init_attr *init) 6148700e3e7SMoni Shoua { 6158700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 6168700e3e7SMoni Shoua 6178700e3e7SMoni Shoua rxe_qp_to_init(qp, init); 6188700e3e7SMoni Shoua rxe_qp_to_attr(qp, attr, mask); 6198700e3e7SMoni Shoua 6208700e3e7SMoni Shoua return 0; 6218700e3e7SMoni Shoua } 6228700e3e7SMoni Shoua 6238700e3e7SMoni Shoua static int rxe_destroy_qp(struct ib_qp *ibqp) 6248700e3e7SMoni Shoua { 6258700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 6268700e3e7SMoni Shoua 6278700e3e7SMoni Shoua rxe_qp_destroy(qp); 6288700e3e7SMoni Shoua rxe_drop_index(qp); 6298700e3e7SMoni Shoua rxe_drop_ref(qp); 6308700e3e7SMoni Shoua return 0; 6318700e3e7SMoni Shoua } 6328700e3e7SMoni Shoua 6338700e3e7SMoni Shoua static int validate_send_wr(struct rxe_qp *qp, struct ib_send_wr *ibwr, 6348700e3e7SMoni Shoua unsigned int mask, unsigned int length) 6358700e3e7SMoni Shoua { 6368700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 6378700e3e7SMoni Shoua struct rxe_sq *sq = &qp->sq; 6388700e3e7SMoni Shoua 6398700e3e7SMoni Shoua if (unlikely(num_sge > sq->max_sge)) 6408700e3e7SMoni Shoua goto err1; 6418700e3e7SMoni Shoua 6428700e3e7SMoni Shoua if (unlikely(mask & WR_ATOMIC_MASK)) { 6438700e3e7SMoni Shoua if (length < 8) 6448700e3e7SMoni Shoua goto err1; 6458700e3e7SMoni Shoua 6468700e3e7SMoni Shoua if (atomic_wr(ibwr)->remote_addr & 0x7) 6478700e3e7SMoni Shoua goto err1; 6488700e3e7SMoni Shoua } 6498700e3e7SMoni Shoua 6508700e3e7SMoni Shoua if (unlikely((ibwr->send_flags & IB_SEND_INLINE) && 6518700e3e7SMoni Shoua (length > sq->max_inline))) 6528700e3e7SMoni Shoua goto err1; 6538700e3e7SMoni Shoua 6548700e3e7SMoni Shoua return 0; 6558700e3e7SMoni Shoua 6568700e3e7SMoni Shoua err1: 6578700e3e7SMoni Shoua return -EINVAL; 6588700e3e7SMoni Shoua } 6598700e3e7SMoni Shoua 6608700e3e7SMoni Shoua static void init_send_wr(struct rxe_qp *qp, struct rxe_send_wr *wr, 6618700e3e7SMoni Shoua struct ib_send_wr *ibwr) 6628700e3e7SMoni Shoua { 6638700e3e7SMoni Shoua wr->wr_id = ibwr->wr_id; 6648700e3e7SMoni Shoua wr->num_sge = ibwr->num_sge; 6658700e3e7SMoni Shoua wr->opcode = ibwr->opcode; 6668700e3e7SMoni Shoua wr->send_flags = ibwr->send_flags; 6678700e3e7SMoni Shoua 6688700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_UD || 6698700e3e7SMoni Shoua qp_type(qp) == IB_QPT_SMI || 6708700e3e7SMoni Shoua qp_type(qp) == IB_QPT_GSI) { 6718700e3e7SMoni Shoua wr->wr.ud.remote_qpn = ud_wr(ibwr)->remote_qpn; 6728700e3e7SMoni Shoua wr->wr.ud.remote_qkey = ud_wr(ibwr)->remote_qkey; 6738700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_GSI) 6748700e3e7SMoni Shoua wr->wr.ud.pkey_index = ud_wr(ibwr)->pkey_index; 6758700e3e7SMoni Shoua if (wr->opcode == IB_WR_SEND_WITH_IMM) 6768700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6778700e3e7SMoni Shoua } else { 6788700e3e7SMoni Shoua switch (wr->opcode) { 6798700e3e7SMoni Shoua case IB_WR_RDMA_WRITE_WITH_IMM: 6808700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6818700e3e7SMoni Shoua case IB_WR_RDMA_READ: 6828700e3e7SMoni Shoua case IB_WR_RDMA_WRITE: 6838700e3e7SMoni Shoua wr->wr.rdma.remote_addr = rdma_wr(ibwr)->remote_addr; 6848700e3e7SMoni Shoua wr->wr.rdma.rkey = rdma_wr(ibwr)->rkey; 6858700e3e7SMoni Shoua break; 6868700e3e7SMoni Shoua case IB_WR_SEND_WITH_IMM: 6878700e3e7SMoni Shoua wr->ex.imm_data = ibwr->ex.imm_data; 6888700e3e7SMoni Shoua break; 6898700e3e7SMoni Shoua case IB_WR_SEND_WITH_INV: 6908700e3e7SMoni Shoua wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 6918700e3e7SMoni Shoua break; 6928700e3e7SMoni Shoua case IB_WR_ATOMIC_CMP_AND_SWP: 6938700e3e7SMoni Shoua case IB_WR_ATOMIC_FETCH_AND_ADD: 6948700e3e7SMoni Shoua wr->wr.atomic.remote_addr = 6958700e3e7SMoni Shoua atomic_wr(ibwr)->remote_addr; 6968700e3e7SMoni Shoua wr->wr.atomic.compare_add = 6978700e3e7SMoni Shoua atomic_wr(ibwr)->compare_add; 6988700e3e7SMoni Shoua wr->wr.atomic.swap = atomic_wr(ibwr)->swap; 6998700e3e7SMoni Shoua wr->wr.atomic.rkey = atomic_wr(ibwr)->rkey; 7008700e3e7SMoni Shoua break; 7018700e3e7SMoni Shoua case IB_WR_LOCAL_INV: 7028700e3e7SMoni Shoua wr->ex.invalidate_rkey = ibwr->ex.invalidate_rkey; 7038700e3e7SMoni Shoua break; 7048700e3e7SMoni Shoua case IB_WR_REG_MR: 7058700e3e7SMoni Shoua wr->wr.reg.mr = reg_wr(ibwr)->mr; 7068700e3e7SMoni Shoua wr->wr.reg.key = reg_wr(ibwr)->key; 7078700e3e7SMoni Shoua wr->wr.reg.access = reg_wr(ibwr)->access; 7088700e3e7SMoni Shoua break; 7098700e3e7SMoni Shoua default: 7108700e3e7SMoni Shoua break; 7118700e3e7SMoni Shoua } 7128700e3e7SMoni Shoua } 7138700e3e7SMoni Shoua } 7148700e3e7SMoni Shoua 7158700e3e7SMoni Shoua static int init_send_wqe(struct rxe_qp *qp, struct ib_send_wr *ibwr, 7168700e3e7SMoni Shoua unsigned int mask, unsigned int length, 7178700e3e7SMoni Shoua struct rxe_send_wqe *wqe) 7188700e3e7SMoni Shoua { 7198700e3e7SMoni Shoua int num_sge = ibwr->num_sge; 7208700e3e7SMoni Shoua struct ib_sge *sge; 7218700e3e7SMoni Shoua int i; 7228700e3e7SMoni Shoua u8 *p; 7238700e3e7SMoni Shoua 7248700e3e7SMoni Shoua init_send_wr(qp, &wqe->wr, ibwr); 7258700e3e7SMoni Shoua 7268700e3e7SMoni Shoua if (qp_type(qp) == IB_QPT_UD || 7278700e3e7SMoni Shoua qp_type(qp) == IB_QPT_SMI || 7288700e3e7SMoni Shoua qp_type(qp) == IB_QPT_GSI) 7298700e3e7SMoni Shoua memcpy(&wqe->av, &to_rah(ud_wr(ibwr)->ah)->av, sizeof(wqe->av)); 7308700e3e7SMoni Shoua 7318700e3e7SMoni Shoua if (unlikely(ibwr->send_flags & IB_SEND_INLINE)) { 7328700e3e7SMoni Shoua p = wqe->dma.inline_data; 7338700e3e7SMoni Shoua 7348700e3e7SMoni Shoua sge = ibwr->sg_list; 7358700e3e7SMoni Shoua for (i = 0; i < num_sge; i++, sge++) { 7368700e3e7SMoni Shoua if (qp->is_user && copy_from_user(p, (__user void *) 7378700e3e7SMoni Shoua (uintptr_t)sge->addr, sge->length)) 7388700e3e7SMoni Shoua return -EFAULT; 7398700e3e7SMoni Shoua 7408700e3e7SMoni Shoua else if (!qp->is_user) 7418700e3e7SMoni Shoua memcpy(p, (void *)(uintptr_t)sge->addr, 7428700e3e7SMoni Shoua sge->length); 7438700e3e7SMoni Shoua 7448700e3e7SMoni Shoua p += sge->length; 7458700e3e7SMoni Shoua } 7468700e3e7SMoni Shoua } else if (mask & WR_REG_MASK) { 7478700e3e7SMoni Shoua wqe->mask = mask; 7488700e3e7SMoni Shoua wqe->state = wqe_state_posted; 7498700e3e7SMoni Shoua return 0; 7508700e3e7SMoni Shoua } else 7518700e3e7SMoni Shoua memcpy(wqe->dma.sge, ibwr->sg_list, 7528700e3e7SMoni Shoua num_sge * sizeof(struct ib_sge)); 7538700e3e7SMoni Shoua 7548700e3e7SMoni Shoua wqe->iova = (mask & WR_ATOMIC_MASK) ? 7558700e3e7SMoni Shoua atomic_wr(ibwr)->remote_addr : 7568700e3e7SMoni Shoua rdma_wr(ibwr)->remote_addr; 7578700e3e7SMoni Shoua wqe->mask = mask; 7588700e3e7SMoni Shoua wqe->dma.length = length; 7598700e3e7SMoni Shoua wqe->dma.resid = length; 7608700e3e7SMoni Shoua wqe->dma.num_sge = num_sge; 7618700e3e7SMoni Shoua wqe->dma.cur_sge = 0; 7628700e3e7SMoni Shoua wqe->dma.sge_offset = 0; 7638700e3e7SMoni Shoua wqe->state = wqe_state_posted; 7648700e3e7SMoni Shoua wqe->ssn = atomic_add_return(1, &qp->ssn); 7658700e3e7SMoni Shoua 7668700e3e7SMoni Shoua return 0; 7678700e3e7SMoni Shoua } 7688700e3e7SMoni Shoua 7698700e3e7SMoni Shoua static int post_one_send(struct rxe_qp *qp, struct ib_send_wr *ibwr, 770e404f945SParav Pandit unsigned int mask, u32 length) 7718700e3e7SMoni Shoua { 7728700e3e7SMoni Shoua int err; 7738700e3e7SMoni Shoua struct rxe_sq *sq = &qp->sq; 7748700e3e7SMoni Shoua struct rxe_send_wqe *send_wqe; 7758700e3e7SMoni Shoua unsigned long flags; 7768700e3e7SMoni Shoua 7778700e3e7SMoni Shoua err = validate_send_wr(qp, ibwr, mask, length); 7788700e3e7SMoni Shoua if (err) 7798700e3e7SMoni Shoua return err; 7808700e3e7SMoni Shoua 7818700e3e7SMoni Shoua spin_lock_irqsave(&qp->sq.sq_lock, flags); 7828700e3e7SMoni Shoua 7838700e3e7SMoni Shoua if (unlikely(queue_full(sq->queue))) { 7848700e3e7SMoni Shoua err = -ENOMEM; 7858700e3e7SMoni Shoua goto err1; 7868700e3e7SMoni Shoua } 7878700e3e7SMoni Shoua 7888700e3e7SMoni Shoua send_wqe = producer_addr(sq->queue); 7898700e3e7SMoni Shoua 7908700e3e7SMoni Shoua err = init_send_wqe(qp, ibwr, mask, length, send_wqe); 7918700e3e7SMoni Shoua if (unlikely(err)) 7928700e3e7SMoni Shoua goto err1; 7938700e3e7SMoni Shoua 7948700e3e7SMoni Shoua /* 7958700e3e7SMoni Shoua * make sure all changes to the work queue are 7968700e3e7SMoni Shoua * written before we update the producer pointer 7978700e3e7SMoni Shoua */ 7988700e3e7SMoni Shoua smp_wmb(); 7998700e3e7SMoni Shoua 8008700e3e7SMoni Shoua advance_producer(sq->queue); 8018700e3e7SMoni Shoua spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 8028700e3e7SMoni Shoua 8038700e3e7SMoni Shoua return 0; 8048700e3e7SMoni Shoua 8058700e3e7SMoni Shoua err1: 8068700e3e7SMoni Shoua spin_unlock_irqrestore(&qp->sq.sq_lock, flags); 8078700e3e7SMoni Shoua return err; 8088700e3e7SMoni Shoua } 8098700e3e7SMoni Shoua 810063af595SParav Pandit static int rxe_post_send_kernel(struct rxe_qp *qp, struct ib_send_wr *wr, 8118700e3e7SMoni Shoua struct ib_send_wr **bad_wr) 8128700e3e7SMoni Shoua { 8138700e3e7SMoni Shoua int err = 0; 8148700e3e7SMoni Shoua unsigned int mask; 8158700e3e7SMoni Shoua unsigned int length = 0; 8168700e3e7SMoni Shoua int i; 8178700e3e7SMoni Shoua int must_sched; 8188700e3e7SMoni Shoua 8198700e3e7SMoni Shoua while (wr) { 8208700e3e7SMoni Shoua mask = wr_opcode_mask(wr->opcode, qp); 8218700e3e7SMoni Shoua if (unlikely(!mask)) { 8228700e3e7SMoni Shoua err = -EINVAL; 8238700e3e7SMoni Shoua *bad_wr = wr; 8248700e3e7SMoni Shoua break; 8258700e3e7SMoni Shoua } 8268700e3e7SMoni Shoua 8278700e3e7SMoni Shoua if (unlikely((wr->send_flags & IB_SEND_INLINE) && 8288700e3e7SMoni Shoua !(mask & WR_INLINE_MASK))) { 8298700e3e7SMoni Shoua err = -EINVAL; 8308700e3e7SMoni Shoua *bad_wr = wr; 8318700e3e7SMoni Shoua break; 8328700e3e7SMoni Shoua } 8338700e3e7SMoni Shoua 8348700e3e7SMoni Shoua length = 0; 8358700e3e7SMoni Shoua for (i = 0; i < wr->num_sge; i++) 8368700e3e7SMoni Shoua length += wr->sg_list[i].length; 8378700e3e7SMoni Shoua 8388700e3e7SMoni Shoua err = post_one_send(qp, wr, mask, length); 8398700e3e7SMoni Shoua 8408700e3e7SMoni Shoua if (err) { 8418700e3e7SMoni Shoua *bad_wr = wr; 8428700e3e7SMoni Shoua break; 8438700e3e7SMoni Shoua } 8448700e3e7SMoni Shoua wr = wr->next; 8458700e3e7SMoni Shoua } 8468700e3e7SMoni Shoua 8478700e3e7SMoni Shoua /* 8488700e3e7SMoni Shoua * Must sched in case of GSI QP because ib_send_mad() hold irq lock, 8498700e3e7SMoni Shoua * and the requester call ip_local_out_sk() that takes spin_lock_bh. 8508700e3e7SMoni Shoua */ 8518700e3e7SMoni Shoua must_sched = (qp_type(qp) == IB_QPT_GSI) || 8528700e3e7SMoni Shoua (queue_count(qp->sq.queue) > 1); 8538700e3e7SMoni Shoua 8548700e3e7SMoni Shoua rxe_run_task(&qp->req.task, must_sched); 8558700e3e7SMoni Shoua 8568700e3e7SMoni Shoua return err; 8578700e3e7SMoni Shoua } 8588700e3e7SMoni Shoua 859063af595SParav Pandit static int rxe_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 860063af595SParav Pandit struct ib_send_wr **bad_wr) 861063af595SParav Pandit { 862063af595SParav Pandit struct rxe_qp *qp = to_rqp(ibqp); 863063af595SParav Pandit 864063af595SParav Pandit if (unlikely(!qp->valid)) { 865063af595SParav Pandit *bad_wr = wr; 866063af595SParav Pandit return -EINVAL; 867063af595SParav Pandit } 868063af595SParav Pandit 869063af595SParav Pandit if (unlikely(qp->req.state < QP_STATE_READY)) { 870063af595SParav Pandit *bad_wr = wr; 871063af595SParav Pandit return -EINVAL; 872063af595SParav Pandit } 873063af595SParav Pandit 874063af595SParav Pandit if (qp->is_user) { 875063af595SParav Pandit /* Utilize process context to do protocol processing */ 876063af595SParav Pandit rxe_run_task(&qp->req.task, 0); 877063af595SParav Pandit return 0; 878063af595SParav Pandit } else 879063af595SParav Pandit return rxe_post_send_kernel(qp, wr, bad_wr); 880063af595SParav Pandit } 881063af595SParav Pandit 8828700e3e7SMoni Shoua static int rxe_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, 8838700e3e7SMoni Shoua struct ib_recv_wr **bad_wr) 8848700e3e7SMoni Shoua { 8858700e3e7SMoni Shoua int err = 0; 8868700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 8878700e3e7SMoni Shoua struct rxe_rq *rq = &qp->rq; 8888700e3e7SMoni Shoua unsigned long flags; 8898700e3e7SMoni Shoua 8908700e3e7SMoni Shoua if (unlikely((qp_state(qp) < IB_QPS_INIT) || !qp->valid)) { 8918700e3e7SMoni Shoua *bad_wr = wr; 8928700e3e7SMoni Shoua err = -EINVAL; 8938700e3e7SMoni Shoua goto err1; 8948700e3e7SMoni Shoua } 8958700e3e7SMoni Shoua 8968700e3e7SMoni Shoua if (unlikely(qp->srq)) { 8978700e3e7SMoni Shoua *bad_wr = wr; 8988700e3e7SMoni Shoua err = -EINVAL; 8998700e3e7SMoni Shoua goto err1; 9008700e3e7SMoni Shoua } 9018700e3e7SMoni Shoua 9028700e3e7SMoni Shoua spin_lock_irqsave(&rq->producer_lock, flags); 9038700e3e7SMoni Shoua 9048700e3e7SMoni Shoua while (wr) { 9058700e3e7SMoni Shoua err = post_one_recv(rq, wr); 9068700e3e7SMoni Shoua if (unlikely(err)) { 9078700e3e7SMoni Shoua *bad_wr = wr; 9088700e3e7SMoni Shoua break; 9098700e3e7SMoni Shoua } 9108700e3e7SMoni Shoua wr = wr->next; 9118700e3e7SMoni Shoua } 9128700e3e7SMoni Shoua 9138700e3e7SMoni Shoua spin_unlock_irqrestore(&rq->producer_lock, flags); 9148700e3e7SMoni Shoua 9158700e3e7SMoni Shoua err1: 9168700e3e7SMoni Shoua return err; 9178700e3e7SMoni Shoua } 9188700e3e7SMoni Shoua 9198700e3e7SMoni Shoua static struct ib_cq *rxe_create_cq(struct ib_device *dev, 9208700e3e7SMoni Shoua const struct ib_cq_init_attr *attr, 9218700e3e7SMoni Shoua struct ib_ucontext *context, 9228700e3e7SMoni Shoua struct ib_udata *udata) 9238700e3e7SMoni Shoua { 9248700e3e7SMoni Shoua int err; 9258700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(dev); 9268700e3e7SMoni Shoua struct rxe_cq *cq; 9278700e3e7SMoni Shoua 9288700e3e7SMoni Shoua if (attr->flags) 9298700e3e7SMoni Shoua return ERR_PTR(-EINVAL); 9308700e3e7SMoni Shoua 9318700e3e7SMoni Shoua err = rxe_cq_chk_attr(rxe, NULL, attr->cqe, attr->comp_vector, udata); 9328700e3e7SMoni Shoua if (err) 9338700e3e7SMoni Shoua goto err1; 9348700e3e7SMoni Shoua 9358700e3e7SMoni Shoua cq = rxe_alloc(&rxe->cq_pool); 9368700e3e7SMoni Shoua if (!cq) { 9378700e3e7SMoni Shoua err = -ENOMEM; 9388700e3e7SMoni Shoua goto err1; 9398700e3e7SMoni Shoua } 9408700e3e7SMoni Shoua 9418700e3e7SMoni Shoua err = rxe_cq_from_init(rxe, cq, attr->cqe, attr->comp_vector, 9428700e3e7SMoni Shoua context, udata); 9438700e3e7SMoni Shoua if (err) 9448700e3e7SMoni Shoua goto err2; 9458700e3e7SMoni Shoua 9468700e3e7SMoni Shoua return &cq->ibcq; 9478700e3e7SMoni Shoua 9488700e3e7SMoni Shoua err2: 9498700e3e7SMoni Shoua rxe_drop_ref(cq); 9508700e3e7SMoni Shoua err1: 9518700e3e7SMoni Shoua return ERR_PTR(err); 9528700e3e7SMoni Shoua } 9538700e3e7SMoni Shoua 9548700e3e7SMoni Shoua static int rxe_destroy_cq(struct ib_cq *ibcq) 9558700e3e7SMoni Shoua { 9568700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9578700e3e7SMoni Shoua 9588700e3e7SMoni Shoua rxe_drop_ref(cq); 9598700e3e7SMoni Shoua return 0; 9608700e3e7SMoni Shoua } 9618700e3e7SMoni Shoua 9628700e3e7SMoni Shoua static int rxe_resize_cq(struct ib_cq *ibcq, int cqe, struct ib_udata *udata) 9638700e3e7SMoni Shoua { 9648700e3e7SMoni Shoua int err; 9658700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9668700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibcq->device); 9678700e3e7SMoni Shoua 9688700e3e7SMoni Shoua err = rxe_cq_chk_attr(rxe, cq, cqe, 0, udata); 9698700e3e7SMoni Shoua if (err) 9708700e3e7SMoni Shoua goto err1; 9718700e3e7SMoni Shoua 9728700e3e7SMoni Shoua err = rxe_cq_resize_queue(cq, cqe, udata); 9738700e3e7SMoni Shoua if (err) 9748700e3e7SMoni Shoua goto err1; 9758700e3e7SMoni Shoua 9768700e3e7SMoni Shoua return 0; 9778700e3e7SMoni Shoua 9788700e3e7SMoni Shoua err1: 9798700e3e7SMoni Shoua return err; 9808700e3e7SMoni Shoua } 9818700e3e7SMoni Shoua 9828700e3e7SMoni Shoua static int rxe_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc) 9838700e3e7SMoni Shoua { 9848700e3e7SMoni Shoua int i; 9858700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 9868700e3e7SMoni Shoua struct rxe_cqe *cqe; 9878700e3e7SMoni Shoua unsigned long flags; 9888700e3e7SMoni Shoua 9898700e3e7SMoni Shoua spin_lock_irqsave(&cq->cq_lock, flags); 9908700e3e7SMoni Shoua for (i = 0; i < num_entries; i++) { 9918700e3e7SMoni Shoua cqe = queue_head(cq->queue); 9928700e3e7SMoni Shoua if (!cqe) 9938700e3e7SMoni Shoua break; 9948700e3e7SMoni Shoua 9958700e3e7SMoni Shoua memcpy(wc++, &cqe->ibwc, sizeof(*wc)); 9968700e3e7SMoni Shoua advance_consumer(cq->queue); 9978700e3e7SMoni Shoua } 9988700e3e7SMoni Shoua spin_unlock_irqrestore(&cq->cq_lock, flags); 9998700e3e7SMoni Shoua 10008700e3e7SMoni Shoua return i; 10018700e3e7SMoni Shoua } 10028700e3e7SMoni Shoua 10038700e3e7SMoni Shoua static int rxe_peek_cq(struct ib_cq *ibcq, int wc_cnt) 10048700e3e7SMoni Shoua { 10058700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 10068700e3e7SMoni Shoua int count = queue_count(cq->queue); 10078700e3e7SMoni Shoua 10088700e3e7SMoni Shoua return (count > wc_cnt) ? wc_cnt : count; 10098700e3e7SMoni Shoua } 10108700e3e7SMoni Shoua 10118700e3e7SMoni Shoua static int rxe_req_notify_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags) 10128700e3e7SMoni Shoua { 10138700e3e7SMoni Shoua struct rxe_cq *cq = to_rcq(ibcq); 1014accacb8fSAndrew Boyer unsigned long irq_flags; 1015accacb8fSAndrew Boyer int ret = 0; 10168700e3e7SMoni Shoua 1017accacb8fSAndrew Boyer spin_lock_irqsave(&cq->cq_lock, irq_flags); 10188700e3e7SMoni Shoua if (cq->notify != IB_CQ_NEXT_COMP) 10198700e3e7SMoni Shoua cq->notify = flags & IB_CQ_SOLICITED_MASK; 10208700e3e7SMoni Shoua 1021accacb8fSAndrew Boyer if ((flags & IB_CQ_REPORT_MISSED_EVENTS) && !queue_empty(cq->queue)) 1022accacb8fSAndrew Boyer ret = 1; 1023accacb8fSAndrew Boyer 1024accacb8fSAndrew Boyer spin_unlock_irqrestore(&cq->cq_lock, irq_flags); 1025accacb8fSAndrew Boyer 1026accacb8fSAndrew Boyer return ret; 10278700e3e7SMoni Shoua } 10288700e3e7SMoni Shoua 10298700e3e7SMoni Shoua static struct ib_mr *rxe_get_dma_mr(struct ib_pd *ibpd, int access) 10308700e3e7SMoni Shoua { 10318700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 10328700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 10338700e3e7SMoni Shoua struct rxe_mem *mr; 10348700e3e7SMoni Shoua int err; 10358700e3e7SMoni Shoua 10368700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10378700e3e7SMoni Shoua if (!mr) { 10388700e3e7SMoni Shoua err = -ENOMEM; 10398700e3e7SMoni Shoua goto err1; 10408700e3e7SMoni Shoua } 10418700e3e7SMoni Shoua 10428700e3e7SMoni Shoua rxe_add_index(mr); 10438700e3e7SMoni Shoua 10448700e3e7SMoni Shoua rxe_add_ref(pd); 10458700e3e7SMoni Shoua 10468700e3e7SMoni Shoua err = rxe_mem_init_dma(rxe, pd, access, mr); 10478700e3e7SMoni Shoua if (err) 10488700e3e7SMoni Shoua goto err2; 10498700e3e7SMoni Shoua 10508700e3e7SMoni Shoua return &mr->ibmr; 10518700e3e7SMoni Shoua 10528700e3e7SMoni Shoua err2: 10538700e3e7SMoni Shoua rxe_drop_ref(pd); 10548700e3e7SMoni Shoua rxe_drop_index(mr); 10558700e3e7SMoni Shoua rxe_drop_ref(mr); 10568700e3e7SMoni Shoua err1: 10578700e3e7SMoni Shoua return ERR_PTR(err); 10588700e3e7SMoni Shoua } 10598700e3e7SMoni Shoua 10608700e3e7SMoni Shoua static struct ib_mr *rxe_reg_user_mr(struct ib_pd *ibpd, 10618700e3e7SMoni Shoua u64 start, 10628700e3e7SMoni Shoua u64 length, 10638700e3e7SMoni Shoua u64 iova, 10648700e3e7SMoni Shoua int access, struct ib_udata *udata) 10658700e3e7SMoni Shoua { 10668700e3e7SMoni Shoua int err; 10678700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 10688700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 10698700e3e7SMoni Shoua struct rxe_mem *mr; 10708700e3e7SMoni Shoua 10718700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 10728700e3e7SMoni Shoua if (!mr) { 10738700e3e7SMoni Shoua err = -ENOMEM; 10748700e3e7SMoni Shoua goto err2; 10758700e3e7SMoni Shoua } 10768700e3e7SMoni Shoua 10778700e3e7SMoni Shoua rxe_add_index(mr); 10788700e3e7SMoni Shoua 10798700e3e7SMoni Shoua rxe_add_ref(pd); 10808700e3e7SMoni Shoua 10818700e3e7SMoni Shoua err = rxe_mem_init_user(rxe, pd, start, length, iova, 10828700e3e7SMoni Shoua access, udata, mr); 10838700e3e7SMoni Shoua if (err) 10848700e3e7SMoni Shoua goto err3; 10858700e3e7SMoni Shoua 10868700e3e7SMoni Shoua return &mr->ibmr; 10878700e3e7SMoni Shoua 10888700e3e7SMoni Shoua err3: 10898700e3e7SMoni Shoua rxe_drop_ref(pd); 10908700e3e7SMoni Shoua rxe_drop_index(mr); 10918700e3e7SMoni Shoua rxe_drop_ref(mr); 10928700e3e7SMoni Shoua err2: 10938700e3e7SMoni Shoua return ERR_PTR(err); 10948700e3e7SMoni Shoua } 10958700e3e7SMoni Shoua 10968700e3e7SMoni Shoua static int rxe_dereg_mr(struct ib_mr *ibmr) 10978700e3e7SMoni Shoua { 10988700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 10998700e3e7SMoni Shoua 11008700e3e7SMoni Shoua mr->state = RXE_MEM_STATE_ZOMBIE; 11018700e3e7SMoni Shoua rxe_drop_ref(mr->pd); 11028700e3e7SMoni Shoua rxe_drop_index(mr); 11038700e3e7SMoni Shoua rxe_drop_ref(mr); 11048700e3e7SMoni Shoua return 0; 11058700e3e7SMoni Shoua } 11068700e3e7SMoni Shoua 11078700e3e7SMoni Shoua static struct ib_mr *rxe_alloc_mr(struct ib_pd *ibpd, 11088700e3e7SMoni Shoua enum ib_mr_type mr_type, 11098700e3e7SMoni Shoua u32 max_num_sg) 11108700e3e7SMoni Shoua { 11118700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibpd->device); 11128700e3e7SMoni Shoua struct rxe_pd *pd = to_rpd(ibpd); 11138700e3e7SMoni Shoua struct rxe_mem *mr; 11148700e3e7SMoni Shoua int err; 11158700e3e7SMoni Shoua 11168700e3e7SMoni Shoua if (mr_type != IB_MR_TYPE_MEM_REG) 11178700e3e7SMoni Shoua return ERR_PTR(-EINVAL); 11188700e3e7SMoni Shoua 11198700e3e7SMoni Shoua mr = rxe_alloc(&rxe->mr_pool); 11208700e3e7SMoni Shoua if (!mr) { 11218700e3e7SMoni Shoua err = -ENOMEM; 11228700e3e7SMoni Shoua goto err1; 11238700e3e7SMoni Shoua } 11248700e3e7SMoni Shoua 11258700e3e7SMoni Shoua rxe_add_index(mr); 11268700e3e7SMoni Shoua 11278700e3e7SMoni Shoua rxe_add_ref(pd); 11288700e3e7SMoni Shoua 11298700e3e7SMoni Shoua err = rxe_mem_init_fast(rxe, pd, max_num_sg, mr); 11308700e3e7SMoni Shoua if (err) 11318700e3e7SMoni Shoua goto err2; 11328700e3e7SMoni Shoua 11338700e3e7SMoni Shoua return &mr->ibmr; 11348700e3e7SMoni Shoua 11358700e3e7SMoni Shoua err2: 11368700e3e7SMoni Shoua rxe_drop_ref(pd); 11378700e3e7SMoni Shoua rxe_drop_index(mr); 11388700e3e7SMoni Shoua rxe_drop_ref(mr); 11398700e3e7SMoni Shoua err1: 11408700e3e7SMoni Shoua return ERR_PTR(err); 11418700e3e7SMoni Shoua } 11428700e3e7SMoni Shoua 11438700e3e7SMoni Shoua static int rxe_set_page(struct ib_mr *ibmr, u64 addr) 11448700e3e7SMoni Shoua { 11458700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 11468700e3e7SMoni Shoua struct rxe_map *map; 11478700e3e7SMoni Shoua struct rxe_phys_buf *buf; 11488700e3e7SMoni Shoua 11498700e3e7SMoni Shoua if (unlikely(mr->nbuf == mr->num_buf)) 11508700e3e7SMoni Shoua return -ENOMEM; 11518700e3e7SMoni Shoua 11528700e3e7SMoni Shoua map = mr->map[mr->nbuf / RXE_BUF_PER_MAP]; 11538700e3e7SMoni Shoua buf = &map->buf[mr->nbuf % RXE_BUF_PER_MAP]; 11548700e3e7SMoni Shoua 11558700e3e7SMoni Shoua buf->addr = addr; 11568700e3e7SMoni Shoua buf->size = ibmr->page_size; 11578700e3e7SMoni Shoua mr->nbuf++; 11588700e3e7SMoni Shoua 11598700e3e7SMoni Shoua return 0; 11608700e3e7SMoni Shoua } 11618700e3e7SMoni Shoua 1162e404f945SParav Pandit static int rxe_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, 1163e404f945SParav Pandit int sg_nents, unsigned int *sg_offset) 11648700e3e7SMoni Shoua { 11658700e3e7SMoni Shoua struct rxe_mem *mr = to_rmr(ibmr); 11668700e3e7SMoni Shoua int n; 11678700e3e7SMoni Shoua 11688700e3e7SMoni Shoua mr->nbuf = 0; 11698700e3e7SMoni Shoua 11708700e3e7SMoni Shoua n = ib_sg_to_pages(ibmr, sg, sg_nents, sg_offset, rxe_set_page); 11718700e3e7SMoni Shoua 11728700e3e7SMoni Shoua mr->va = ibmr->iova; 11738700e3e7SMoni Shoua mr->iova = ibmr->iova; 11748700e3e7SMoni Shoua mr->length = ibmr->length; 11758700e3e7SMoni Shoua mr->page_shift = ilog2(ibmr->page_size); 11768700e3e7SMoni Shoua mr->page_mask = ibmr->page_size - 1; 11778700e3e7SMoni Shoua mr->offset = mr->iova & mr->page_mask; 11788700e3e7SMoni Shoua 11798700e3e7SMoni Shoua return n; 11808700e3e7SMoni Shoua } 11818700e3e7SMoni Shoua 11828700e3e7SMoni Shoua static int rxe_attach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid) 11838700e3e7SMoni Shoua { 11848700e3e7SMoni Shoua int err; 11858700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 11868700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 11878700e3e7SMoni Shoua struct rxe_mc_grp *grp; 11888700e3e7SMoni Shoua 11898700e3e7SMoni Shoua /* takes a ref on grp if successful */ 11908700e3e7SMoni Shoua err = rxe_mcast_get_grp(rxe, mgid, &grp); 11918700e3e7SMoni Shoua if (err) 11928700e3e7SMoni Shoua return err; 11938700e3e7SMoni Shoua 11948700e3e7SMoni Shoua err = rxe_mcast_add_grp_elem(rxe, qp, grp); 11958700e3e7SMoni Shoua 11968700e3e7SMoni Shoua rxe_drop_ref(grp); 11978700e3e7SMoni Shoua return err; 11988700e3e7SMoni Shoua } 11998700e3e7SMoni Shoua 12008700e3e7SMoni Shoua static int rxe_detach_mcast(struct ib_qp *ibqp, union ib_gid *mgid, u16 mlid) 12018700e3e7SMoni Shoua { 12028700e3e7SMoni Shoua struct rxe_dev *rxe = to_rdev(ibqp->device); 12038700e3e7SMoni Shoua struct rxe_qp *qp = to_rqp(ibqp); 12048700e3e7SMoni Shoua 12058700e3e7SMoni Shoua return rxe_mcast_drop_grp_elem(rxe, qp, mgid); 12068700e3e7SMoni Shoua } 12078700e3e7SMoni Shoua 12088700e3e7SMoni Shoua static ssize_t rxe_show_parent(struct device *device, 12098700e3e7SMoni Shoua struct device_attribute *attr, char *buf) 12108700e3e7SMoni Shoua { 12118700e3e7SMoni Shoua struct rxe_dev *rxe = container_of(device, struct rxe_dev, 12128700e3e7SMoni Shoua ib_dev.dev); 12138700e3e7SMoni Shoua 1214839f5ac0SBart Van Assche return snprintf(buf, 16, "%s\n", rxe_parent_name(rxe, 1)); 12158700e3e7SMoni Shoua } 12168700e3e7SMoni Shoua 12178700e3e7SMoni Shoua static DEVICE_ATTR(parent, S_IRUGO, rxe_show_parent, NULL); 12188700e3e7SMoni Shoua 12198700e3e7SMoni Shoua static struct device_attribute *rxe_dev_attributes[] = { 12208700e3e7SMoni Shoua &dev_attr_parent, 12218700e3e7SMoni Shoua }; 12228700e3e7SMoni Shoua 12238700e3e7SMoni Shoua int rxe_register_device(struct rxe_dev *rxe) 12248700e3e7SMoni Shoua { 12258700e3e7SMoni Shoua int err; 12268700e3e7SMoni Shoua int i; 12278700e3e7SMoni Shoua struct ib_device *dev = &rxe->ib_dev; 12288700e3e7SMoni Shoua 12298700e3e7SMoni Shoua strlcpy(dev->name, "rxe%d", IB_DEVICE_NAME_MAX); 12308700e3e7SMoni Shoua strlcpy(dev->node_desc, "rxe", sizeof(dev->node_desc)); 12318700e3e7SMoni Shoua 12328700e3e7SMoni Shoua dev->owner = THIS_MODULE; 12338700e3e7SMoni Shoua dev->node_type = RDMA_NODE_IB_CA; 12348700e3e7SMoni Shoua dev->phys_port_cnt = 1; 12358700e3e7SMoni Shoua dev->num_comp_vectors = RXE_NUM_COMP_VECTORS; 123685e9f1dbSBart Van Assche dev->dev.parent = rxe_dma_device(rxe); 12378700e3e7SMoni Shoua dev->local_dma_lkey = 0; 1238839f5ac0SBart Van Assche dev->node_guid = rxe_node_guid(rxe); 12390bbb3b74SBart Van Assche dev->dev.dma_ops = &dma_virt_ops; 12408700e3e7SMoni Shoua 12418700e3e7SMoni Shoua dev->uverbs_abi_ver = RXE_UVERBS_ABI_VERSION; 12428700e3e7SMoni Shoua dev->uverbs_cmd_mask = BIT_ULL(IB_USER_VERBS_CMD_GET_CONTEXT) 12438700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) 12448700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_DEVICE) 12458700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_PORT) 12468700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_ALLOC_PD) 12478700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DEALLOC_PD) 12488700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_SRQ) 12498700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_SRQ) 12508700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_SRQ) 12518700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_SRQ) 12528700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_SRQ_RECV) 12538700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_QP) 12548700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_QP) 12558700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_QP) 12568700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_QP) 12578700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_SEND) 12588700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POST_RECV) 12598700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_CQ) 12608700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_RESIZE_CQ) 12618700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_CQ) 12628700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_POLL_CQ) 12638700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_PEEK_CQ) 12648700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) 12658700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_REG_MR) 12668700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DEREG_MR) 12678700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_CREATE_AH) 12688700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_MODIFY_AH) 12698700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_QUERY_AH) 12708700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DESTROY_AH) 12718700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_ATTACH_MCAST) 12728700e3e7SMoni Shoua | BIT_ULL(IB_USER_VERBS_CMD_DETACH_MCAST) 12738700e3e7SMoni Shoua ; 12748700e3e7SMoni Shoua 12758700e3e7SMoni Shoua dev->query_device = rxe_query_device; 12768700e3e7SMoni Shoua dev->modify_device = rxe_modify_device; 12778700e3e7SMoni Shoua dev->query_port = rxe_query_port; 12788700e3e7SMoni Shoua dev->modify_port = rxe_modify_port; 12798700e3e7SMoni Shoua dev->get_link_layer = rxe_get_link_layer; 12808700e3e7SMoni Shoua dev->query_gid = rxe_query_gid; 12818700e3e7SMoni Shoua dev->get_netdev = rxe_get_netdev; 12828700e3e7SMoni Shoua dev->add_gid = rxe_add_gid; 12838700e3e7SMoni Shoua dev->del_gid = rxe_del_gid; 12848700e3e7SMoni Shoua dev->query_pkey = rxe_query_pkey; 12858700e3e7SMoni Shoua dev->alloc_ucontext = rxe_alloc_ucontext; 12868700e3e7SMoni Shoua dev->dealloc_ucontext = rxe_dealloc_ucontext; 12878700e3e7SMoni Shoua dev->mmap = rxe_mmap; 12888700e3e7SMoni Shoua dev->get_port_immutable = rxe_port_immutable; 12898700e3e7SMoni Shoua dev->alloc_pd = rxe_alloc_pd; 12908700e3e7SMoni Shoua dev->dealloc_pd = rxe_dealloc_pd; 12918700e3e7SMoni Shoua dev->create_ah = rxe_create_ah; 12928700e3e7SMoni Shoua dev->modify_ah = rxe_modify_ah; 12938700e3e7SMoni Shoua dev->query_ah = rxe_query_ah; 12948700e3e7SMoni Shoua dev->destroy_ah = rxe_destroy_ah; 12958700e3e7SMoni Shoua dev->create_srq = rxe_create_srq; 12968700e3e7SMoni Shoua dev->modify_srq = rxe_modify_srq; 12978700e3e7SMoni Shoua dev->query_srq = rxe_query_srq; 12988700e3e7SMoni Shoua dev->destroy_srq = rxe_destroy_srq; 12998700e3e7SMoni Shoua dev->post_srq_recv = rxe_post_srq_recv; 13008700e3e7SMoni Shoua dev->create_qp = rxe_create_qp; 13018700e3e7SMoni Shoua dev->modify_qp = rxe_modify_qp; 13028700e3e7SMoni Shoua dev->query_qp = rxe_query_qp; 13038700e3e7SMoni Shoua dev->destroy_qp = rxe_destroy_qp; 13048700e3e7SMoni Shoua dev->post_send = rxe_post_send; 13058700e3e7SMoni Shoua dev->post_recv = rxe_post_recv; 13068700e3e7SMoni Shoua dev->create_cq = rxe_create_cq; 13078700e3e7SMoni Shoua dev->destroy_cq = rxe_destroy_cq; 13088700e3e7SMoni Shoua dev->resize_cq = rxe_resize_cq; 13098700e3e7SMoni Shoua dev->poll_cq = rxe_poll_cq; 13108700e3e7SMoni Shoua dev->peek_cq = rxe_peek_cq; 13118700e3e7SMoni Shoua dev->req_notify_cq = rxe_req_notify_cq; 13128700e3e7SMoni Shoua dev->get_dma_mr = rxe_get_dma_mr; 13138700e3e7SMoni Shoua dev->reg_user_mr = rxe_reg_user_mr; 13148700e3e7SMoni Shoua dev->dereg_mr = rxe_dereg_mr; 13158700e3e7SMoni Shoua dev->alloc_mr = rxe_alloc_mr; 13168700e3e7SMoni Shoua dev->map_mr_sg = rxe_map_mr_sg; 13178700e3e7SMoni Shoua dev->attach_mcast = rxe_attach_mcast; 13188700e3e7SMoni Shoua dev->detach_mcast = rxe_detach_mcast; 13198700e3e7SMoni Shoua 13208700e3e7SMoni Shoua err = ib_register_device(dev, NULL); 13218700e3e7SMoni Shoua if (err) { 13228700e3e7SMoni Shoua pr_warn("rxe_register_device failed, err = %d\n", err); 13238700e3e7SMoni Shoua goto err1; 13248700e3e7SMoni Shoua } 13258700e3e7SMoni Shoua 13268700e3e7SMoni Shoua for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) { 13278700e3e7SMoni Shoua err = device_create_file(&dev->dev, rxe_dev_attributes[i]); 13288700e3e7SMoni Shoua if (err) { 13298700e3e7SMoni Shoua pr_warn("device_create_file failed, i = %d, err = %d\n", 13308700e3e7SMoni Shoua i, err); 13318700e3e7SMoni Shoua goto err2; 13328700e3e7SMoni Shoua } 13338700e3e7SMoni Shoua } 13348700e3e7SMoni Shoua 13358700e3e7SMoni Shoua return 0; 13368700e3e7SMoni Shoua 13378700e3e7SMoni Shoua err2: 13388700e3e7SMoni Shoua ib_unregister_device(dev); 13398700e3e7SMoni Shoua err1: 13408700e3e7SMoni Shoua return err; 13418700e3e7SMoni Shoua } 13428700e3e7SMoni Shoua 13438700e3e7SMoni Shoua int rxe_unregister_device(struct rxe_dev *rxe) 13448700e3e7SMoni Shoua { 13458700e3e7SMoni Shoua int i; 13468700e3e7SMoni Shoua struct ib_device *dev = &rxe->ib_dev; 13478700e3e7SMoni Shoua 13488700e3e7SMoni Shoua for (i = 0; i < ARRAY_SIZE(rxe_dev_attributes); ++i) 13498700e3e7SMoni Shoua device_remove_file(&dev->dev, rxe_dev_attributes[i]); 13508700e3e7SMoni Shoua 13518700e3e7SMoni Shoua ib_unregister_device(dev); 13528700e3e7SMoni Shoua 13538700e3e7SMoni Shoua return 0; 13548700e3e7SMoni Shoua } 1355